/[gentoo-x86]/eclass/toolchain-funcs.eclass
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Revision 1.108 - (hide annotations) (download)
Mon Oct 17 19:11:49 2011 UTC (2 years, 11 months ago) by vapier
Branch: MAIN
Changes since 1.107: +69 -2 lines
add econf_build helper for cross-compiling some packages

1 vapier 1.108 # Copyright 1999-2011 Gentoo Foundation
2 vapier 1.1 # Distributed under the terms of the GNU General Public License v2
3 vapier 1.108 # $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.107 2011/09/12 21:42:08 vapier Exp $
4 vapier 1.74
5     # @ECLASS: toolchain-funcs.eclass
6     # @MAINTAINER:
7     # Toolchain Ninjas <toolchain@gentoo.org>
8     # @BLURB: functions to query common info about the toolchain
9     # @DESCRIPTION:
10     # The toolchain-funcs aims to provide a complete suite of functions
11     # for gleaning useful information about the toolchain and to simplify
12     # ugly things like cross-compiling and multilib. All of this is done
13     # in such a way that you can rely on the function always returning
14     # something sane.
15 vapier 1.1
16 vapier 1.69 ___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes"
17     [[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib
18 eradicator 1.34
19 vapier 1.1 DESCRIPTION="Based on the ${ECLASS} eclass"
20    
21 vapier 1.105 # tc-getPROG <VAR [search vars]> <default> [tuple]
22     _tc-getPROG() {
23     local tuple=$1
24     local v var vars=$2
25     local prog=$3
26    
27     var=${vars%% *}
28     for v in ${vars} ; do
29     if [[ -n ${!v} ]] ; then
30 vapier 1.106 export ${var}="${!v}"
31 vapier 1.105 echo "${!v}"
32     return 0
33     fi
34     done
35 vapier 1.1
36 eradicator 1.35 local search=
37 vapier 1.105 [[ -n $4 ]] && search=$(type -p "$4-${prog}")
38     [[ -z ${search} && -n ${!tuple} ]] && search=$(type -p "${!tuple}-${prog}")
39 eradicator 1.35 [[ -n ${search} ]] && prog=${search##*/}
40 vapier 1.1
41 vapier 1.17 export ${var}=${prog}
42 vapier 1.1 echo "${!var}"
43     }
44 vapier 1.107 tc-getBUILD_PROG() { _tc-getPROG CBUILD "BUILD_$1 $1_FOR_BUILD HOST$1" "${@:2}"; }
45 vapier 1.105 tc-getPROG() { _tc-getPROG CHOST "$@"; }
46 vapier 1.1
47 vapier 1.74 # @FUNCTION: tc-getAR
48     # @USAGE: [toolchain prefix]
49     # @RETURN: name of the archiver
50 vapier 1.33 tc-getAR() { tc-getPROG AR ar "$@"; }
51 vapier 1.74 # @FUNCTION: tc-getAS
52     # @USAGE: [toolchain prefix]
53     # @RETURN: name of the assembler
54 vapier 1.33 tc-getAS() { tc-getPROG AS as "$@"; }
55 vapier 1.74 # @FUNCTION: tc-getCC
56     # @USAGE: [toolchain prefix]
57     # @RETURN: name of the C compiler
58 vapier 1.33 tc-getCC() { tc-getPROG CC gcc "$@"; }
59 vapier 1.74 # @FUNCTION: tc-getCPP
60     # @USAGE: [toolchain prefix]
61     # @RETURN: name of the C preprocessor
62 robbat2 1.58 tc-getCPP() { tc-getPROG CPP cpp "$@"; }
63 vapier 1.74 # @FUNCTION: tc-getCXX
64     # @USAGE: [toolchain prefix]
65     # @RETURN: name of the C++ compiler
66 vapier 1.33 tc-getCXX() { tc-getPROG CXX g++ "$@"; }
67 vapier 1.74 # @FUNCTION: tc-getLD
68     # @USAGE: [toolchain prefix]
69     # @RETURN: name of the linker
70 vapier 1.33 tc-getLD() { tc-getPROG LD ld "$@"; }
71 vapier 1.74 # @FUNCTION: tc-getSTRIP
72     # @USAGE: [toolchain prefix]
73     # @RETURN: name of the strip program
74 kanaka 1.59 tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
75 vapier 1.74 # @FUNCTION: tc-getNM
76     # @USAGE: [toolchain prefix]
77     # @RETURN: name of the symbol/object thingy
78 vapier 1.33 tc-getNM() { tc-getPROG NM nm "$@"; }
79 vapier 1.74 # @FUNCTION: tc-getRANLIB
80     # @USAGE: [toolchain prefix]
81     # @RETURN: name of the archiver indexer
82 vapier 1.33 tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
83 kumba 1.86 # @FUNCTION: tc-getOBJCOPY
84     # @USAGE: [toolchain prefix]
85     # @RETURN: name of the object copier
86     tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
87 vapier 1.74 # @FUNCTION: tc-getF77
88     # @USAGE: [toolchain prefix]
89     # @RETURN: name of the Fortran 77 compiler
90 dberkholz 1.101 tc-getF77() { tc-getPROG F77 gfortran "$@"; }
91 dberkholz 1.78 # @FUNCTION: tc-getFC
92 vapier 1.74 # @USAGE: [toolchain prefix]
93     # @RETURN: name of the Fortran 90 compiler
94 dberkholz 1.78 tc-getFC() { tc-getPROG FC gfortran "$@"; }
95 vapier 1.74 # @FUNCTION: tc-getGCJ
96     # @USAGE: [toolchain prefix]
97     # @RETURN: name of the java compiler
98 vapier 1.33 tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
99 vapier 1.96 # @FUNCTION: tc-getPKG_CONFIG
100     # @USAGE: [toolchain prefix]
101     # @RETURN: name of the pkg-config tool
102     tc-getPKG_CONFIG() { tc-getPROG PKG_CONFIG pkg-config "$@"; }
103 vapier 1.98 # @FUNCTION: tc-getRC
104     # @USAGE: [toolchain prefix]
105     # @RETURN: name of the Windows resource compiler
106     tc-getRC() { tc-getPROG RC windres "$@"; }
107     # @FUNCTION: tc-getDLLWRAP
108     # @USAGE: [toolchain prefix]
109     # @RETURN: name of the Windows dllwrap utility
110     tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
111 vapier 1.1
112 vapier 1.107 # @FUNCTION: tc-getBUILD_AR
113     # @USAGE: [toolchain prefix]
114     # @RETURN: name of the archiver for building binaries to run on the build machine
115     tc-getBUILD_AR() { tc-getBUILD_PROG AR ar "$@"; }
116     # @FUNCTION: tc-getBUILD_AS
117     # @USAGE: [toolchain prefix]
118     # @RETURN: name of the assembler for building binaries to run on the build machine
119     tc-getBUILD_AS() { tc-getBUILD_PROG AS as "$@"; }
120 vapier 1.74 # @FUNCTION: tc-getBUILD_CC
121     # @USAGE: [toolchain prefix]
122     # @RETURN: name of the C compiler for building binaries to run on the build machine
123 vapier 1.107 tc-getBUILD_CC() { tc-getBUILD_PROG CC gcc "$@"; }
124 vapier 1.105 # @FUNCTION: tc-getBUILD_CPP
125     # @USAGE: [toolchain prefix]
126     # @RETURN: name of the C preprocessor for building binaries to run on the build machine
127 vapier 1.107 tc-getBUILD_CPP() { tc-getBUILD_PROG CPP cpp "$@"; }
128 vapier 1.105 # @FUNCTION: tc-getBUILD_CXX
129     # @USAGE: [toolchain prefix]
130     # @RETURN: name of the C++ compiler for building binaries to run on the build machine
131 vapier 1.107 tc-getBUILD_CXX() { tc-getBUILD_PROG CXX g++ "$@"; }
132     # @FUNCTION: tc-getBUILD_LD
133     # @USAGE: [toolchain prefix]
134     # @RETURN: name of the linker for building binaries to run on the build machine
135     tc-getBUILD_LD() { tc-getBUILD_PROG LD ld "$@"; }
136     # @FUNCTION: tc-getBUILD_STRIP
137     # @USAGE: [toolchain prefix]
138     # @RETURN: name of the strip program for building binaries to run on the build machine
139     tc-getBUILD_STRIP() { tc-getBUILD_PROG STRIP strip "$@"; }
140     # @FUNCTION: tc-getBUILD_NM
141     # @USAGE: [toolchain prefix]
142     # @RETURN: name of the symbol/object thingy for building binaries to run on the build machine
143     tc-getBUILD_NM() { tc-getBUILD_PROG NM nm "$@"; }
144     # @FUNCTION: tc-getBUILD_RANLIB
145     # @USAGE: [toolchain prefix]
146     # @RETURN: name of the archiver indexer for building binaries to run on the build machine
147     tc-getBUILD_RANLIB() { tc-getBUILD_PROG RANLIB ranlib "$@"; }
148     # @FUNCTION: tc-getBUILD_OBJCOPY
149     # @USAGE: [toolchain prefix]
150     # @RETURN: name of the object copier for building binaries to run on the build machine
151     tc-getBUILD_OBJCOPY() { tc-getBUILD_PROG OBJCOPY objcopy "$@"; }
152     # @FUNCTION: tc-getBUILD_PKG_CONFIG
153     # @USAGE: [toolchain prefix]
154     # @RETURN: name of the pkg-config tool for building binaries to run on the build machine
155     tc-getBUILD_PKG_CONFIG() { tc-getBUILD_PROG PKG_CONFIG pkg-config "$@"; }
156 vapier 1.1
157 vapier 1.74 # @FUNCTION: tc-export
158     # @USAGE: <list of toolchain variables>
159     # @DESCRIPTION:
160     # Quick way to export a bunch of compiler vars at once.
161 vapier 1.10 tc-export() {
162     local var
163     for var in "$@" ; do
164 vapier 1.79 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
165 vapier 1.36 eval tc-get${var} > /dev/null
166 vapier 1.10 done
167     }
168    
169 vapier 1.74 # @FUNCTION: tc-is-cross-compiler
170     # @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
171 vapier 1.12 tc-is-cross-compiler() {
172 vapier 1.43 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
173 vapier 1.12 }
174    
175 vapier 1.74 # @FUNCTION: tc-is-softfloat
176     # @DESCRIPTION:
177 vapier 1.65 # See if this toolchain is a softfloat based one.
178 vapier 1.74 # @CODE
179 vapier 1.65 # The possible return values:
180     # - only: the target is always softfloat (never had fpu)
181     # - yes: the target should support softfloat
182 armin76 1.99 # - no: the target doesn't support softfloat
183 vapier 1.74 # @CODE
184 vapier 1.65 # This allows us to react differently where packages accept
185     # softfloat flags in the case where support is optional, but
186     # rejects softfloat flags where the target always lacks an fpu.
187     tc-is-softfloat() {
188     case ${CTARGET} in
189 vapier 1.66 bfin*|h8300*)
190 vapier 1.65 echo "only" ;;
191     *)
192     [[ ${CTARGET//_/-} == *-softfloat-* ]] \
193     && echo "yes" \
194     || echo "no"
195     ;;
196     esac
197     }
198 vapier 1.1
199 armin76 1.99 # @FUNCTION: tc-is-hardfloat
200     # @DESCRIPTION:
201     # See if this toolchain is a hardfloat based one.
202     # @CODE
203     # The possible return values:
204     # - yes: the target should support hardfloat
205     # - no: the target doesn't support hardfloat
206     tc-is-hardfloat() {
207     [[ ${CTARGET//_/-} == *-hardfloat-* ]] \
208     && echo "yes" \
209     || echo "no"
210     }
211    
212 grobian 1.91 # @FUNCTION: tc-is-static-only
213     # @DESCRIPTION:
214     # Return shell true if the target does not support shared libs, shell false
215     # otherwise.
216     tc-is-static-only() {
217     local host=${CTARGET:-${CHOST}}
218    
219     # *MiNT doesn't have shared libraries, only platform so far
220     return $([[ ${host} == *-mint* ]])
221     }
222    
223 vapier 1.108 # @FUNCTION: tc-env_build
224     # @USAGE: <command> [command args]
225     # @INTERNAL
226     # @DESCRIPTION:
227     # Setup the compile environment to the build tools and then execute the
228     # specified command. We use tc-getBUILD_XX here so that we work with
229     # all of the semi-[non-]standard env vars like $BUILD_CC which often
230     # the target build system does not check.
231     tc-env_build() {
232     CFLAGS=${BUILD_CFLAGS:--O1 -pipe} \
233     CXXFLAGS=${BUILD_CXXFLAGS:--O1 -pipe} \
234     CPPFLAGS=${BUILD_CPPFLAGS} \
235     LDFLAGS=${BUILD_LDFLAGS} \
236     AR=$(tc-getBUILD_AR) \
237     AS=$(tc-getBUILD_AS) \
238     CC=$(tc-getBUILD_CC) \
239     CPP=$(tc-getBUILD_CPP) \
240     CXX=$(tc-getBUILD_CXX) \
241     LD=$(tc-getBUILD_LD) \
242     NM=$(tc-getBUILD_NM) \
243     PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) \
244     RANLIB=$(tc-getBUILD_RANLIB) \
245     "$@"
246     }
247    
248     # @FUNCTION: econf_build
249     # @USAGE: [econf flags]
250     # @DESCRIPTION:
251     # Sometimes we need to locally build up some tools to run on CBUILD because
252     # the package has helper utils which are compiled+executed when compiling.
253     # This won't work when cross-compiling as the CHOST is set to a target which
254     # we cannot natively execute.
255     #
256     # For example, the python package will build up a local python binary using
257     # a portable build system (configure+make), but then use that binary to run
258     # local python scripts to build up other components of the overall python.
259     # We cannot rely on the python binary in $PATH as that often times will be
260     # a different version, or not even installed in the first place. Instead,
261     # we compile the code in a different directory to run on CBUILD, and then
262     # use that binary when compiling the main package to run on CHOST.
263     #
264     # For example, with newer EAPIs, you'd do something like:
265     # @CODE
266     # src_configure() {
267     # ECONF_SOURCE=${S}
268     # if tc-is-cross-compiler ; then
269     # mkdir "${WORKDIR}"/${CBUILD}
270     # pushd "${WORKDIR}"/${CBUILD} >/dev/null
271     # econf_build --disable-some-unused-stuff
272     # popd >/dev/null
273     # fi
274     # ... normal build paths ...
275     # }
276     # src_compile() {
277     # if tc-is-cross-compiler ; then
278     # pushd "${WORKDIR}"/${CBUILD} >/dev/null
279     # emake one-or-two-build-tools
280     # ln/mv build-tools to normal build paths in ${S}/
281     # popd >/dev/null
282     # fi
283     # ... normal build paths ...
284     # }
285     # @CODE
286     econf_build() {
287     tc-env_build econf --build=${CBUILD:-${CHOST}} "$@"
288     }
289    
290 vapier 1.100 # @FUNCTION: tc-has-openmp
291     # @USAGE: [toolchain prefix]
292     # @DESCRIPTION:
293     # See if the toolchain supports OpenMP.
294     tc-has-openmp() {
295     local base="${T}/test-tc-openmp"
296     cat <<-EOF > "${base}.c"
297     #include <omp.h>
298     int main() {
299     int nthreads, tid, ret = 0;
300     #pragma omp parallel private(nthreads, tid)
301     {
302     tid = omp_get_thread_num();
303     nthreads = omp_get_num_threads(); ret += tid + nthreads;
304     }
305     return ret;
306     }
307     EOF
308     $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
309     local ret=$?
310     rm -f "${base}"*
311     return ${ret}
312     }
313    
314 vapier 1.97 # @FUNCTION: tc-has-tls
315     # @USAGE: [-s|-c|-l] [toolchain prefix]
316     # @DESCRIPTION:
317     # See if the toolchain supports thread local storage (TLS). Use -s to test the
318     # compiler, -c to also test the assembler, and -l to also test the C library
319     # (the default).
320     tc-has-tls() {
321     local base="${T}/test-tc-tls"
322     cat <<-EOF > "${base}.c"
323     int foo(int *i) {
324     static __thread int j = 0;
325     return *i ? j : *i;
326     }
327     EOF
328     local flags
329     case $1 in
330     -s) flags="-S";;
331     -c) flags="-c";;
332     -l) ;;
333     -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
334     esac
335     : ${flags:=-fPIC -shared -Wl,-z,defs}
336     [[ $1 == -* ]] && shift
337     $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
338     local ret=$?
339     rm -f "${base}"*
340     return ${ret}
341     }
342    
343 grobian 1.91
344 swegener 1.40 # Parse information from CBUILD/CHOST/CTARGET rather than
345 vapier 1.20 # use external variables from the profile.
346     tc-ninja_magic_to_arch() {
347 vapier 1.21 ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
348 vapier 1.19
349     local type=$1
350     local host=$2
351 eradicator 1.25 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
352 vapier 1.19
353     case ${host} in
354     alpha*) echo alpha;;
355     arm*) echo arm;;
356 vapier 1.72 avr*) ninj avr32 avr;;
357 vapier 1.53 bfin*) ninj blackfin bfin;;
358 vapier 1.47 cris*) echo cris;;
359 vapier 1.19 hppa*) ninj parisc hppa;;
360 vapier 1.75 i?86*)
361     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
362     # trees have been unified into 'x86'.
363 aballier 1.77 # FreeBSD still uses i386
364     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
365 vapier 1.75 echo i386
366     else
367     echo x86
368     fi
369     ;;
370 vapier 1.19 ia64*) echo ia64;;
371 vapier 1.23 m68*) echo m68k;;
372 vapier 1.19 mips*) echo mips;;
373 vapier 1.52 nios2*) echo nios2;;
374     nios*) echo nios;;
375 vapier 1.49 powerpc*)
376 vapier 1.103 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
377     # have been unified into simply 'powerpc', but until 2.6.16,
378     # ppc32 is still using ARCH="ppc" as default
379     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
380     echo powerpc
381     elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
382     if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
383     echo powerpc
384     else
385     echo ppc
386     fi
387     elif [[ ${host} == powerpc64* ]] ; then
388     echo ppc64
389     elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
390     ninj ppc64 ppc
391     else
392     echo ppc
393     fi
394     ;;
395 vapier 1.47 s390*) echo s390;;
396     sh64*) ninj sh64 sh;;
397     sh*) echo sh;;
398 vapier 1.19 sparc64*) ninj sparc64 sparc;;
399 vapier 1.28 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
400     && ninj sparc64 sparc \
401     || echo sparc
402     ;;
403 vapier 1.47 vax*) echo vax;;
404 aballier 1.104 x86_64*freebsd*) echo amd64;;
405 vapier 1.75 x86_64*)
406     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
407     # trees have been unified into 'x86'.
408     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
409     echo x86
410     else
411     ninj x86_64 amd64
412     fi
413     ;;
414 vapier 1.73
415     # since our usage of tc-arch is largely concerned with
416     # normalizing inputs for testing ${CTARGET}, let's filter
417     # other cross targets (mingw and such) into the unknown.
418     *) echo unknown;;
419 vapier 1.19 esac
420     }
421 vapier 1.74 # @FUNCTION: tc-arch-kernel
422     # @USAGE: [toolchain prefix]
423     # @RETURN: name of the kernel arch according to the compiler target
424 vapier 1.20 tc-arch-kernel() {
425 vapier 1.74 tc-ninja_magic_to_arch kern "$@"
426 vapier 1.19 }
427 vapier 1.74 # @FUNCTION: tc-arch
428     # @USAGE: [toolchain prefix]
429     # @RETURN: name of the portage arch according to the compiler target
430 vapier 1.20 tc-arch() {
431 vapier 1.74 tc-ninja_magic_to_arch portage "$@"
432 vapier 1.19 }
433 vapier 1.74
434 robbat2 1.71 tc-endian() {
435     local host=$1
436     [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
437     host=${host%%-*}
438    
439     case ${host} in
440     alpha*) echo big;;
441     arm*b*) echo big;;
442     arm*) echo little;;
443     cris*) echo little;;
444     hppa*) echo big;;
445     i?86*) echo little;;
446     ia64*) echo little;;
447     m68*) echo big;;
448     mips*l*) echo little;;
449     mips*) echo big;;
450     powerpc*) echo big;;
451     s390*) echo big;;
452     sh*b*) echo big;;
453     sh*) echo little;;
454     sparc*) echo big;;
455     x86_64*) echo little;;
456     *) echo wtf;;
457     esac
458     }
459 vapier 1.19
460 vapier 1.102 # Internal func. The first argument is the version info to expand.
461     # Query the preprocessor to improve compatibility across different
462     # compilers rather than maintaining a --version flag matrix. #335943
463     _gcc_fullversion() {
464     local ver="$1"; shift
465     set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
466     eval echo "$ver"
467     }
468    
469 vapier 1.74 # @FUNCTION: gcc-fullversion
470     # @RETURN: compiler version (major.minor.micro: [3.4.6])
471 vapier 1.1 gcc-fullversion() {
472 vapier 1.102 _gcc_fullversion '$1.$2.$3' "$@"
473 vapier 1.1 }
474 vapier 1.74 # @FUNCTION: gcc-version
475     # @RETURN: compiler version (major.minor: [3.4].6)
476 vapier 1.1 gcc-version() {
477 vapier 1.102 _gcc_fullversion '$1.$2' "$@"
478 vapier 1.1 }
479 vapier 1.74 # @FUNCTION: gcc-major-version
480     # @RETURN: major compiler version (major: [3].4.6)
481 vapier 1.1 gcc-major-version() {
482 vapier 1.102 _gcc_fullversion '$1' "$@"
483 vapier 1.1 }
484 vapier 1.74 # @FUNCTION: gcc-minor-version
485     # @RETURN: minor compiler version (minor: 3.[4].6)
486 vapier 1.1 gcc-minor-version() {
487 vapier 1.102 _gcc_fullversion '$2' "$@"
488 vapier 1.1 }
489 vapier 1.74 # @FUNCTION: gcc-micro-version
490     # @RETURN: micro compiler version (micro: 3.4.[6])
491 vapier 1.1 gcc-micro-version() {
492 vapier 1.102 _gcc_fullversion '$3' "$@"
493 vapier 1.1 }
494 vapier 1.74
495 kevquinn 1.68 # Returns the installation directory - internal toolchain
496     # function for use by _gcc-specs-exists (for flag-o-matic).
497     _gcc-install-dir() {
498 vapier 1.76 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
499 kevquinn 1.68 awk '$1=="install:" {print $2}')"
500     }
501     # Returns true if the indicated specs file exists - internal toolchain
502     # function for use by flag-o-matic.
503     _gcc-specs-exists() {
504     [[ -f $(_gcc-install-dir)/$1 ]]
505     }
506 kevquinn 1.41
507 kevquinn 1.68 # Returns requested gcc specs directive unprocessed - for used by
508     # gcc-specs-directive()
509 kevquinn 1.46 # Note; later specs normally overwrite earlier ones; however if a later
510     # spec starts with '+' then it appends.
511     # gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
512 kevquinn 1.68 # as "Reading <file>", in order. Strictly speaking, if there's a
513     # $(gcc_install_dir)/specs, the built-in specs aren't read, however by
514     # the same token anything from 'gcc -dumpspecs' is overridden by
515     # the contents of $(gcc_install_dir)/specs so the result is the
516     # same either way.
517     _gcc-specs-directive_raw() {
518 kevquinn 1.57 local cc=$(tc-getCC)
519     local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
520     ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
521 kevquinn 1.46 'BEGIN { pspec=""; spec=""; outside=1 }
522     $1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
523 kevquinn 1.41 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
524 kevquinn 1.46 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
525     { spec=spec $0 }
526     END { print spec }'
527     return 0
528 kevquinn 1.41 }
529    
530 kevquinn 1.68 # Return the requested gcc specs directive, with all included
531     # specs expanded.
532     # Note, it does not check for inclusion loops, which cause it
533     # to never finish - but such loops are invalid for gcc and we're
534     # assuming gcc is operational.
535     gcc-specs-directive() {
536     local directive subdname subdirective
537     directive="$(_gcc-specs-directive_raw $1)"
538     while [[ ${directive} == *%\(*\)* ]]; do
539     subdname=${directive/*%\(}
540     subdname=${subdname/\)*}
541     subdirective="$(_gcc-specs-directive_raw ${subdname})"
542     directive="${directive//\%(${subdname})/${subdirective}}"
543     done
544     echo "${directive}"
545     return 0
546     }
547    
548 kevquinn 1.41 # Returns true if gcc sets relro
549     gcc-specs-relro() {
550     local directive
551     directive=$(gcc-specs-directive link_command)
552 gengor 1.84 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
553 kevquinn 1.41 }
554     # Returns true if gcc sets now
555     gcc-specs-now() {
556     local directive
557     directive=$(gcc-specs-directive link_command)
558 gengor 1.84 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
559 kevquinn 1.41 }
560     # Returns true if gcc builds PIEs
561     gcc-specs-pie() {
562     local directive
563     directive=$(gcc-specs-directive cc1)
564 gengor 1.84 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
565 kevquinn 1.41 }
566     # Returns true if gcc builds with the stack protector
567     gcc-specs-ssp() {
568     local directive
569     directive=$(gcc-specs-directive cc1)
570 gengor 1.84 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
571 kevquinn 1.41 }
572 kevquinn 1.46 # Returns true if gcc upgrades fstack-protector to fstack-protector-all
573     gcc-specs-ssp-to-all() {
574     local directive
575     directive=$(gcc-specs-directive cc1)
576 gengor 1.84 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
577 kevquinn 1.46 }
578 gengor 1.80 # Returns true if gcc builds with fno-strict-overflow
579     gcc-specs-nostrict() {
580     local directive
581     directive=$(gcc-specs-directive cc1)
582 gengor 1.84 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
583 gengor 1.80 }
584 vapier 1.60
585    
586 vapier 1.74 # @FUNCTION: gen_usr_ldscript
587 vapier 1.85 # @USAGE: [-a] <list of libs to create linker scripts for>
588 vapier 1.74 # @DESCRIPTION:
589 vapier 1.60 # This function generate linker scripts in /usr/lib for dynamic
590     # libs in /lib. This is to fix linking problems when you have
591     # the .so in /lib, and the .a in /usr/lib. What happens is that
592     # in some cases when linking dynamic, the .a in /usr/lib is used
593     # instead of the .so in /lib due to gcc/libtool tweaking ld's
594 vapier 1.74 # library search path. This causes many builds to fail.
595 vapier 1.60 # See bug #4411 for more info.
596     #
597     # Note that you should in general use the unversioned name of
598 vapier 1.74 # the library (libfoo.so), as ldconfig should usually update it
599     # correctly to point to the latest version of the library present.
600 vapier 1.70 gen_usr_ldscript() {
601 vapier 1.85 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
602 grobian 1.91 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
603    
604     tc-is-static-only && return
605    
606 vapier 1.60 # Just make sure it exists
607     dodir /usr/${libdir}
608    
609 vapier 1.85 if [[ $1 == "-a" ]] ; then
610     auto=true
611     shift
612     dodir /${libdir}
613     fi
614    
615 vapier 1.60 # OUTPUT_FORMAT gives hints to the linker as to what binary format
616     # is referenced ... makes multilib saner
617     output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
618     [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
619    
620     for lib in "$@" ; do
621 grobian 1.91 local tlib
622     if ${auto} ; then
623     lib="lib${lib}${suffix}"
624 grobian 1.90 else
625 grobian 1.91 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
626     # This especially is for AIX where $(get_libname) can return ".a",
627     # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
628     [[ -r ${ED}/${libdir}/${lib} ]] || continue
629     #TODO: better die here?
630     fi
631    
632     case ${CTARGET:-${CHOST}} in
633     *-darwin*)
634 vapier 1.85 if ${auto} ; then
635 grobian 1.91 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
636     else
637     tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
638     fi
639     [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
640     tlib=${tlib##*/}
641    
642     if ${auto} ; then
643     mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
644 grobian 1.92 # some install_names are funky: they encode a version
645     if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
646     mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
647     fi
648 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
649     fi
650    
651     # Mach-O files have an id, which is like a soname, it tells how
652     # another object linking against this lib should reference it.
653     # Since we moved the lib from usr/lib into lib this reference is
654     # wrong. Hence, we update it here. We don't configure with
655     # libdir=/lib because that messes up libtool files.
656     # Make sure we don't lose the specific version, so just modify the
657     # existing install_name
658 grobian 1.94 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
659 grobian 1.95 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
660 grobian 1.94 local nowrite=yes
661     fi
662 grobian 1.91 install_name_tool \
663     -id "${EPREFIX}"/${libdir}/${tlib} \
664 grobian 1.94 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
665 grobian 1.95 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
666 grobian 1.91 # Now as we don't use GNU binutils and our linker doesn't
667     # understand linker scripts, just create a symlink.
668     pushd "${ED}/usr/${libdir}" > /dev/null
669     ln -snf "../../${libdir}/${tlib}" "${lib}"
670     popd > /dev/null
671     ;;
672 grobian 1.93 *-aix*|*-irix*|*64*-hpux*|*-interix*|*-winnt*)
673 grobian 1.91 if ${auto} ; then
674     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
675     # no way to retrieve soname on these platforms (?)
676     tlib=$(readlink "${ED}"/${libdir}/${lib})
677     tlib=${tlib##*/}
678     if [[ -z ${tlib} ]] ; then
679     # ok, apparently was not a symlink, don't remove it and
680     # just link to it
681     tlib=${lib}
682     else
683     rm -f "${ED}"/${libdir}/${lib}
684     fi
685     else
686     tlib=${lib}
687     fi
688    
689     # we don't have GNU binutils on these platforms, so we symlink
690     # instead, which seems to work fine. Keep it relative, otherwise
691     # we break some QA checks in Portage
692     # on interix, the linker scripts would work fine in _most_
693     # situations. if a library links to such a linker script the
694     # absolute path to the correct library is inserted into the binary,
695     # which is wrong, since anybody linking _without_ libtool will miss
696     # some dependencies, since the stupid linker cannot find libraries
697     # hardcoded with absolute paths (as opposed to the loader, which
698     # seems to be able to do this).
699     # this has been seen while building shared-mime-info which needs
700     # libxml2, but links without libtool (and does not add libz to the
701     # command line by itself).
702     pushd "${ED}/usr/${libdir}" > /dev/null
703     ln -snf "../../${libdir}/${tlib}" "${lib}"
704     popd > /dev/null
705     ;;
706 grobian 1.93 hppa*-hpux*) # PA-RISC 32bit (SOM) only, others (ELF) match *64*-hpux* above.
707     if ${auto} ; then
708     tlib=$(chatr "${ED}"/usr/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
709     [[ -z ${tlib} ]] && tlib=${lib}
710     tlib=${tlib##*/} # 'internal name' can have a path component
711     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
712     # some SONAMEs are funky: they encode a version before the .so
713     if [[ ${tlib} != ${lib}* ]] ; then
714     mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
715     fi
716     [[ ${tlib} != ${lib} ]] &&
717     rm -f "${ED}"/${libdir}/${lib}
718     else
719     tlib=$(chatr "${ED}"/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
720     [[ -z ${tlib} ]] && tlib=${lib}
721     tlib=${tlib##*/} # 'internal name' can have a path component
722     fi
723     pushd "${ED}"/usr/${libdir} >/dev/null
724     ln -snf "../../${libdir}/${tlib}" "${lib}"
725     # need the internal name in usr/lib too, to be available at runtime
726     # when linked with /path/to/lib.sl (hardcode_direct_absolute=yes)
727     [[ ${tlib} != ${lib} ]] &&
728     ln -snf "../../${libdir}/${tlib}" "${tlib}"
729     popd >/dev/null
730     ;;
731 grobian 1.91 *)
732     if ${auto} ; then
733     tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
734     [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
735     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
736 vapier 1.88 # some SONAMEs are funky: they encode a version before the .so
737     if [[ ${tlib} != ${lib}* ]] ; then
738 grobian 1.91 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
739 vapier 1.88 fi
740 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
741 vapier 1.85 else
742     tlib=${lib}
743     fi
744 grobian 1.91 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
745 grobian 1.61 /* GNU ld script
746 vapier 1.87 Since Gentoo has critical dynamic libraries in /lib, and the static versions
747     in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
748     run into linking problems. This "fake" dynamic lib is a linker script that
749     redirects the linker to the real lib. And yes, this works in the cross-
750     compiling scenario as the sysroot-ed linker will prepend the real path.
751 grobian 1.61
752     See bug http://bugs.gentoo.org/4411 for more info.
753     */
754     ${output_format}
755 grobian 1.91 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
756 grobian 1.61 END_LDSCRIPT
757 grobian 1.91 ;;
758     esac
759     fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
760 vapier 1.60 done
761     }

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